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TP-LINK Archer VR900v (v1.0)
Broadcom.For a list of all currently documented Broadcom chipsets with specifications, see
AC1900 VoIP WLAN DSL Router
- Product page (DE) (Annex B/J)
All-In-One Box Telefonie WLAN-AC Modem Router
Note: This model is not the VR900, but the VR900v.
- Both differ quite substancially in both hardware and pricing.
- Be careful not to mix up "VR900v (v1.0)" and "VR900 (v1.0)"!
- TP-LINK Archer VR900 v1.0 AC1900 (Annex A) PPage
- TP-LINK Archer VR200v AC750 (Annex B/J + VoIP/DECT) PPage
- The device runs on 2 entirely different SoCs:
- Broadcom BCM4709 (2x 1GHz ARM Cortex-A9) with RAM 128MB and flash 16MB.
- Broadcom BCM63168 (2x 400MHz MIPS) with RAM 64MB and flash 8MB.
- Spansion S25FL128SAGMFI00 16MB (FL128SAIF00, 439QQ0009 A, SPANSION)
- Winbond W25Q64FVSSIG 8MB (Winbind, 25Q64FVSIG, 1532)
- Winbond W25Q80BVSSIG 1MB (Winbond, 25Q80BVSIG, 1444) (DECT)
- SK hynix H5TQ1G63EFR-PBC 128MB (H5TQ1G63EFR, PBC 444V, NWLC2479XH3)
- Zentel A3R12E40CBF-8E 64MB (A3R12E40CBF, -8E, 527ZENV6, 57025694G-F)
- For wired ethernet connectivity, the integrated NICs of the BCM4709 are used.
- That SoC supposedly also features some hardware offloading capabilities
- as well as hardware accelerated routing.
- Wi-fi is provided by 2 BCM4360 with an unknown number of antennas.
- The device has 3 external RP-SMA connectors for wifi, yet the exact
- wiring/mapping is unknown.
(firstname.lastname@example.org) (gcc version 4.6.2 (Buildroot 2011.11)) #1 SMP PREEMPT Mon Aug 24 10:08:45 HKT 2015;unknown OS on BCM4709
The device has at least 2, possibly 3 serial interfaces
- on the unpopulated 4 pin headers J4, J7 and J8.
- J4 (unpopulated 3.3V TTL, RX-TX-GND-VCC, 115200,8,N,1)
- J7 (unpopulated, 3.3V TTL, ?-?-GND-VCC)
- J8 (unpopulated, 3.3V TTL, RX-TX-GND-VCC, 115200,8,N,1)
- All operate at 3.3V TTL, J4 and J8 run at 115200,8,N,1,
- whilst the exact function of J7 is yet unknown.
- The pinout of all headers is RX-TX-GND-VCC, whilst the exact
- function of the RX and TX pins on J7 is yet to be found.
- At least on my board, it was virtually impossible to solder the GND pins
- on all 3 headers (the other pins could be soldered without any problem).
- You probably need to brass-brush them prior to soldering (do not brush
- them after soldering or you will spread fine-ground solder over the PCB,
- causing possible shortages!).
VoIP / DECT
- 2 separate VoIP ports are offered through which POTS telephones can be used for VoIP
- telephony. Both ports feature a German TAE socket and a classical RJ11 socket.
- I have not tested if you can connect 2 phones simultanously to the same VoIP port.
- DECT is provided by a DSP DCX81 with a small separated antenna PCB which is integrated
- into the router's plastic case and is not visible or accessible from the outside.